EP 3455995 B1 20220302 - SECURE REMOTE AGGREGATION
Title (en)
SECURE REMOTE AGGREGATION
Title (de)
GESICHERTE FERNGESTEUERTE AGGREGATION
Title (fr)
AGRÉGATION DÉLÉGUÉE SÉCURISÉE
Publication
Application
Priority
- EP 16169600 A 20160513
- EP 2017060918 W 20170508
Abstract (en)
[origin: WO2017194469A1] The invention relates to a method for aggregation of a performance indicator of a device comprising the steps of: concatenating a respective first data item to a plurality of second data items in the device; encrypting the plurality of concatenated second data items relevant for computing the performance indicator using a first encryption key in the device, wherein the first encryption key is based on an additive homomorphic encryption scheme; sending the encrypted concatenated second data items to a computation cluster; computing the performance indicator on the computation cluster using the encrypted concatenated second data items and computing an aggregate value regarding the performance indicator by summing up the encrypted concatenated second data items; sending the aggregate value to a server of a service provider of the device; decrypting the aggregate value using a second encryption key on the server of the service provider; and verifying the decrypted result by checking whether the decrypted sum computed by summing up the encrypted concatenated second data items comprises a predetermined value. The present invention also relates to a corresponding system and corresponding computer program product comprising one or more computer readable media having computer executable instructions for performing the steps of the method.
IPC 8 full level
H04L 9/00 (2022.01)
CPC (source: EP US)
H04L 9/008 (2013.01 - EP US); H04L 2209/46 (2013.01 - EP US); H04L 2209/76 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017194469 A1 20171116; CN 109075963 A 20181221; CN 109075963 B 20220401; EP 3455995 A1 20190320; EP 3455995 B1 20220302; US 10680799 B2 20200609; US 2019097787 A1 20190328
DOCDB simple family (application)
EP 2017060918 W 20170508; CN 201780029705 A 20170508; EP 17721185 A 20170508; US 201816189126 A 20181113